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Diagnostics Optimization CT MODBUS RTU Technical Data
E300 Design Guide 135
Issue Number: 1
A13 (Drive Encoder Auto Configuration Select C02)
If auto configuration has not been disabled, A13 (Drive Encoder Auto Configuration Select C02) = Enabled (1), then during position feedback
initialization or power up. SC.Hiperface. SC.EnDat, EnDat, BiSS encoders are interrogated to determine the encoder type and parameters are then
set-up correctly with information from the encoder as follows:-
Once these parameters have been set-up it should be possible for the drive to operate correctly with the encoder. Auto configuration occurs as part of
the position interface initialization or at power up if selected, and so if the auto configuration fails (i.e. comms cannot be established) then initialization
will not be completed and an Encoder 7 trip occurs. For SC Hiperface and BiSS encoders the drive must identify the encoder model number to
perform auto configuration. If communications are established but the drive cannot recognize the encoder model, an Encoder 12 trip is generated. If
auto configuration is disabled A13 (Drive Encoder Auto Configuration Select C02) = Disabled (0) then none of the above actions are carried out. For
all other position feedback device types parameter auto configuration has no effect.
A14 (Drive Encoder Rotary Pulses Per Revolution C03)
This parameter only has any effect if the position feedback interface is being used with a rotary feedback device
Encoder type: AB, AB Servo
• The rotary pulses per revolution should be set to the number of rotary pulses per rev of the encoder connected to the position feedback interface.
Encoder type: FD, FR, FD Servo, FR Servo
• The rotary pulses per revolution should be set to the number of rotary pulses per rev for the encoder connected to the position feedback interface
divided by 2.
Encoder type: SC, SC Servo, SC Hiperface, SC EnDat, SC SSI, SC SC
• The rotary pulses per revolution should be set to the number of sine waves per revolution for the encoder connected to the position feedback
interface.
Encoder type: Any other device type
• A14 (Drive Encoder Rotary Pulses Per Revolution C03) has no effect.
A15 (Drive Encoder Voltage Select C04)
The encoder power supply voltage parameter sets the level for the supply voltage output to the position feedback device. To ensure that the
maximum voltage for the position feedback device is not accidentally exceeded, the device should be disconnected from the drive when the level is
being adjusted.
A13 {C02} Drive Encoder Auto Configuration Select
RW Txt US
OL
Ú
RFC-A
Disabled (0) Enabled (1)
Ö
Enabled (1)
RFC-S
Rotary
Drive Encoder Rotary Turns Bits (C07)
Drive Encoder Rotary Pulses Per Revolution (C03)
Drive Encoder Comms Bits (C08)
A14 {C03} Drive Encoder Rotary Pulses Per Revolution
RW Num US
OL
Ú
RFC-A
1 to 100,000 ppr
Ö
1024 ppr
RFC-S 4096 ppr
A15 {C04} Drive Encoder Voltage Select
RW Txt US
OL
Ú
RFC-A
5 V (0) 8 V (1) 15 V (2)
Ö
5 V (0)
RFC-S
Value Text
05 V
18 V
2 15 V
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